SqlConnection - is remote or local connection?

Question

How can I determine is it local connection (localhost or 127.0.0.1) or is it remote connection (other machine in local area) if I have SqlConnection object?

Answer 1

You can get the connection string out of the SqlConnection obejct.

string s = connection.ConnectionString;

and check the data source or the server element of that string.

Edit: Code sample provided.

I think this function should work (not tested anyways).

private bool CheckConnectionStringLocalOrRemote(string connectionString) {

        //Local machine
        IPHostEntry entry = Dns.GetHostByAddress("127.0.0.1");

        IPAddress[] addresses = entry.AddressList;
        String[] aliases = entry.Aliases;
        string hostName = entry.HostName;           

        if(connectionString.Contains(hostName))
            return true;



        foreach (IPAddress address in addresses) {
            if (connectionString.Contains(address.ToString())) {
                return true;
            }
        }

        foreach (string alias in aliases) {
            if (connectionString.Contains(alias))
                return true;
        }


        return false;
    }

Ps: make sure to add a using statement to System.Net namespace.